Toyota RAV4 manuals

Toyota RAV4 Service Manual: Short to gnd in can bus line

(2005/11-2006/01)

Description

There may be a short circuit between the can bus line and gnd when there is resistance between terminals 6 (canh) and 4 (cg) or terminals 14 (canl) and 4 (cg) of the dlc3.

Toyota RAV4. Short to gnd in can bus line


Wiring diagram

Toyota RAV4. Short to gnd in can bus line


Toyota RAV4. Short to gnd in can bus line


Inspection procedure

Notice:

Hint:

Operating the ignition switch, any switches or any doors triggers related ecu and sensor communication with the can, which causes resistance variation.

  1. Check can bus line for short to gnd (dlc3 branch wire)

Toyota RAV4. Check can bus line for short to gnd (dlc3 branch wire)


  1. Disconnect the e68 no. 2 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance



  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (no. 1 Junction connector)

Toyota RAV4. Check can bus line for short to gnd (no. 1 Junction connector)


  1. Disconnect the a36 no. 1 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance



  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can bus line for short to gnd (no. 3 Junction connector, no. 4 Junction connector side)

Toyota RAV4. Check can bus line for short to gnd (no. 3 Junction connector, no. 4 Junction connector side)


  1. Disconnect the e70 no. 3 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance



  1. Connect connector

  1. Reconnect the e70 no. 3 Junction connector.


  1. Check can bus line for short to gnd (no. 4 Junction connector side)

Toyota RAV4. Check can bus line for short to gnd (no. 4 Junction connector side)


  1. Disconnect the e69 no. 4 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance



  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus line for short to gnd (no. 3 Junction connector - center airbag sensor assembly)

Toyota RAV4. Check can bus line for short to gnd (no. 3 Junction connector - center airbag sensor assembly)


  1. Disconnect the e70 no. 3 Junction connector.
  2. Measure the resistance of the wire harness side connectors.

Standard resistance



  1. Connect connector

  1. Reconnect the e70 no. 3 Junction connector.


  1. Check can bus line for short to gnd (center airbag sensor assembly)

Toyota RAV4. Check can bus line for short to gnd (center airbag sensor assembly)


  1. Disconnect the e45 center airbag sensor connector.
  2. Measure the resistance of the dlc3.

Standard resistance



Replace center airbag sensor assembly

  1. Check can bus line for short to gnd (no. 1 Junction connector - ecm)

Toyota RAV4. Check can bus line for short to gnd (no. 1 Junction connector - ecm)


  1. Disconnect the a36 no. 1 Junction connector.
  2. Measure the resistance of the wire harness side connectors.

Standard resistance



  1. Check can bus line for short to gnd (no. 1Junction connector - abs and traction actuator)

Toyota RAV4. Check can bus line for short to gnd (no. 1Junction connector - abs and traction actuator)


  1. Measure the resistance of the wire harness side connectors.

Standard resistance




Repair or replace can main wire and connector (no. 1 Junction connector - no.

2 Junction connector)

  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can bus line for short to gnd (ecm)

Toyota RAV4. Check can bus line for short to gnd (ecm)


  1. Disconnect the a9 ecm connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace ecm

  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can bus line for short to gnd (abs and traction actuator)

Toyota RAV4. Check can bus line for short to gnd (abs and traction actuator)


  1. Disconnect the a19 abs and traction actuator (skid control ecu) connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace power steering ecu

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (main body ecu)

Toyota RAV4. Check can bus line for short to gnd (main body ecu)


  1. Disconnect the e17 main body ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace instrument panel junction block (main body ecu)

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (air conditioning amplifier)

Toyota RAV4. Check can bus line for short to gnd (air conditioning amplifier)


  1. Disconnect the e37*1 or e36*2 air conditioning amplifier connector.

Hint:

  1. Measure the resistance of the dlc3.

Standard resistance




Replace air conditioning amplifier

  1. Connect connector

  1. Reconnect the 68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (steering angle sensor)

Toyota RAV4. Check can bus line for short to gnd (steering angle sensor)


  1. Disconnect the e11 steering sensor connector.
  2. Measure the resistance of the dlc3.

Standard resistance




  1. Check can bus line for short to gnd (no. 4 Junction connector - 4wd control ecu)

Notice:

For vehicles without 4wd, go to "check can bus line for short to gnd (no. 4 Junction connector - combination meter ecu)".

  1. Measure the resistance of the wire harness side connectors.

Toyota RAV4. Check can bus line for short to gnd (no. 4 Junction connector - 4wd control ecu)


Standard resistance




  1. Check can bus line for short to gnd (no. 4 Junction connector - combination meter ecu)

Toyota RAV4. Check can bus line for short to gnd (no. 4 Junction connector - combination meter ecu)


  1. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus line for short to gnd (4wd control ecu)

Toyota RAV4. Check can bus line for short to gnd (4wd control ecu)


  1. Disconnect the e57 4wd control ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace 4wd control ecu

  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus line for short to gnd (combination meter ecu)

Toyota RAV4. Check can bus line for short to gnd (combination meter ecu)


  1. Disconnect the e19 combination meter ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace combination meter ecu

Short to gnd in can bus line (2006/01- )

Description

There may be a short circuit between the can bus line and gnd when there is resistance between terminals 6 (canh) and 4 (cg) or terminals 14 (canl) and 4 (cg) of the dlc3.

Toyota RAV4. Short to gnd in can bus line (2006/01- )


Wiring diagram

Toyota RAV4. Short to gnd in can bus line (2006/01- )


Toyota RAV4. Short to gnd in can bus line (2006/01- )


Inspection procedure

Notice:

Hint:

Operating the ignition switch, any switches or any doors triggers related ecu and sensor communication with the can, which causes resistance variation.

  1. Check can bus line for short to gnd (dlc3 branch wire)

Toyota RAV4. Check can bus line for short to gnd (dlc3 branch wire)


  1. Disconnect the e68 no. 2 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance




  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (no. 1 Junction connector)

Toyota RAV4. Check can bus line for short to gnd (no. 1 Junction connector)


  1. Disconnect the a36 no. 1 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance




  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can bus line for short to gnd (no. 3 Junction connector, no. 4 Junction connector side)

Toyota RAV4. Check can bus line for short to gnd (no. 3 Junction connector, no. 4 Junction connector side)


  1. Disconnect the e70 no. 3 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance




  1. Connect connector

  1. Reconnect the e70 no. 3 Junction connector.


  1. Check can bus line for short to gnd (no. 4 Junction connector side)

Toyota RAV4. Check can bus line for short to gnd (no. 4 Junction connector side)


  1. Disconnect the e69 no. 4 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance




  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus line for short to gnd (no. 3 Junction connector - center airbag sensor assembly)

Toyota RAV4. Check can bus line for short to gnd (no. 3 Junction connector - center airbag sensor assembly)


  1. Disconnect the e70 no. 3 Junction connector.
  2. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Connect connector

  1. Reconnect the e70 no. 3 Junction connector.


  1. Check can bus line for short to gnd (center airbag sensor assembly)

Toyota RAV4. Check can bus line for short to gnd (center airbag sensor assembly)


  1. Disconnect the e45 center airbag sensor connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace center airbag sensor assembly

  1. Check can bus line for short to gnd (no. 1 Junction connector - ecm)

Toyota RAV4. Check can bus line for short to gnd (no. 1 Junction connector - ecm)


  1. Disconnect the a36 no. 1 Junction connector.
  2. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check can bus line for short to gnd (no. 1 Junction connector - abs and traction actuator)

Toyota RAV4. Check can bus line for short to gnd (no. 1 Junction connector - abs and traction actuator)


  1. Measure the resistance of the wire harness side connectors.

Standard resistance




Repair or replace can main wire and connector (no. 1 Junction connector - no. 2 Junction connector)

  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can bus line for short to gnd (ecm)

Toyota RAV4. Check can bus line for short to gnd (ecm)


  1. Disconnect the a9 ecm connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace ecm

  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can bus line for short to gnd (abs and traction actuator)

Toyota RAV4. Check can bus line for short to gnd (abs and traction actuator)


  1. Disconnect the a19 abs and traction actuator (skid control ecu) connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace abs and traction actuator (skid control ecu)

  1. Connect connector

  1. Reconnect the e70 no. 3 Junction connector.


  1. Check can bus line for short to gnd (no. 2 Junction connector - yaw rate sensor)

Toyota RAV4. Check can bus line for short to gnd (no. 2 Junction connector - yaw rate sensor)


  1. Disconnect the e68 no. 2 Junction connector.
  2. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check can bus line for short to gnd (no. 2 Junction connector - power steering ecu)

Toyota RAV4. Check can bus line for short to gnd (no. 2 Junction connector - power steering ecu)


  1. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check can bus line for short to gnd (no. 2 Junction connector - main body ecu)

Toyota RAV4. Check can bus line for short to gnd (no. 2 Junction connector - main body ecu)


  1. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check can bus line for short to gnd (no. 2 Junction connector - air conditioning amplifier)

Toyota RAV4. Check can bus line for short to gnd (no. 2 Junction connector - air conditioning amplifier)


  1. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check can bus line for short to gnd (no. 2 Junction connector - steering angle sensor)

Toyota RAV4. Check can bus line for short to gnd (no. 2 Junction connector - steering angle sensor)


  1. Measure the resistance of the wire harness side connectors.

Standard resistance




Repair or replace can main wire and connector (no. 2 Junction connector - no.

3 Junction connector)

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (yaw rate sensor)

Toyota RAV4. Check can bus line for short to gnd (yaw rate sensor)


  1. Disconnect the k6 yaw rate sensor connector.
  2. Measure the resistance of the dlc3.

Standard resistance




replace yaw rate sensor

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (power steering ecu)

Toyota RAV4. Check can bus line for short to gnd (power steering ecu)


  1. Disconnect the e18 power steering ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance



Replace power steering ecu

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (main body ecu)

Toyota RAV4. Check can bus line for short to gnd (main body ecu)


  1. Disconnect the e17 main body ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace instrument panel junction block (main body ecu)

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (air conditioning amplifier)

Toyota RAV4. Check can bus line for short to gnd (air conditioning amplifier)


  1. Disconnect the e37*1 or e36*2 air conditioning amplifier connector.

Hint:

*1: For automatic air conditioning system

*2: For manual air conditioning system

  1. Measure the resistance of the dlc3.

Standard resistance




Replace air conditioning amplifier

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to gnd (steering angle sensor)

Toyota RAV4. Check can bus line for short to gnd (steering angle sensor)


  1. Disconnect the e11 steering sensor connector.
  2. Measure the resistance of the dlc3.

Standard resistance



replace steering angle sensor

  1. Check can bus line for short to gnd (no. 4 Junction connector - 4wd control ecu)

Notice:

For vehicles without 4wd, go to "check can bus line for short to gnd (no. 4 Junction connector - combination meter ecu)".

Toyota RAV4. Check can bus line for short to gnd (no. 4 Junction connector - 4wd control ecu)


  1. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check can bus line for short to gnd (no. 4 Junction connector - combination meter ecu)

Toyota RAV4. Check can bus line for short to gnd (no. 4 Junction connector - combination meter ecu)


  1. Measure the resistance of the wire harness side connectors.

Standard resistance




Replace 4wd control ecu

  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus line for short to gnd (combination meter ecu)

Toyota RAV4. Check can bus line for short to gnd (combination meter ecu)


  1. Disconnect the e19 combination meter ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance



Replace combination meter ecu

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